The Centerline Data Distribution System (CDDS) is a tool for sharing GIS based local
and state road datasets between public, nonprofit, and governmental organizations.
The users of this site are composed of local, regional, state, and federal government
agencies, and affiliated nonprofit organizations. This site was created to serve
as a repository and secure distribution center for street centerline files and statewide
road datasets. The goal of the site is to reduce the time and effort local data
providers and staff of local, regional, state, and federal governments spend distributing
and collecting road data.

The digital road data contained on this site is only available to authorized users
that have signed an agreement that restricts the use of this data for non-commercial
uses. To request authorization, please click the "Need an account" link to
the right.

Please begin using the application by clicking one of the tabs above. Brief instructions for each activity are located on the right-side of the respective page.

This site was created by the Statewide Mapping Advisory Committee (SMAC) Working
Group for Roads and Transportation (WGRT) in cooperation with CGIA, with a grant
from the National Highway Traffic Safety Administration (NHTSA) through the Traffic
Records Coordinating Committee (TRCC). The SMAC, WGRT,
NHTSA, TRCC, and data providers are not responsible for out of date data and/or errors
and/or misuse of the data contained in the CDDS.